_____ INSTRUCTED ME HOW TO MAKE A GOOD PREPARATION FOR A JOB INTER...

27. _____ instructed me how to make a good preparation for a job interview.

A. John Robbins to that I spoke by telephone

B. John Robbins, that I spoke to by telephone

C. John Robbins, to who I spoke by telephone

D. John Robbins, whom I spoke to by telephone